Metal-pot of type-bar-making machines



A. E. JEANS AND P. T. HAYES.

METAL POT OF TYPE BAR MAKING MACHINES. APPUCATION FILED JUNE 24. 1919.

1,332,842. A Patented Mar.'2,1920.

2 SHEETS-SHEET I.

VEITBBBE Patented 2 S H E A. E. 1E AND. P. T. HAYES.

METAL POT 0 E BAR MAKING MACHINES.

APPLICATION FILED JUNE 24. l-9l9.

Mar.

51-52175 n I I I l n I STATES OFFICE ALLA-N EDGAR, JEANS i- PETER THOMASainYns, or IvEnPooL, ENGLAND.

METAL-POT or YrE-BAR-MAKIN MACHINES.

To all whom it may concern:

Be it known that we, ALLAN EDGAR J EANS and PETER THOMAS HAYES, subjectsof the King of Great Britain, residing at Liverpool, inthe county ofLancaster and Kingdom of England, respectively, have invented certainnew and useful Improvements in or Relating to the Metal-Pots ofType-Bar- Making Machines, of which the following is a specification.

This invention has reference to the melting pots of machines forproducing stereotyped lines or bars of type as a substitute for typesetting, the said invention having for its object to provide suchmelting pots with a device which will prevent impure matter such asdross from mixing with the -metal required for efiiciently working the pThis device is designed with a view to retaining in its interior allimpure matter from the metal with which the pot is from time to timereplenished in the working of the machine.

The invention will be understood from the following descriptionreference being had to the accompanying drawings, in which Figure 1 is ageneral view of the device with a part broken away.

Fig. 2 is a vertical section of a melting pot with our invention appliedthereto.

Fig. 3 is a similar view showing a mod ification.

Referring first to Figs. 1 and 2, the device in question comprises ametal container or colander A made of steel or other suitable materialwhich will not be destroyed by the molten metal in the pot B. Thiscontainer or colander A is perforated with small holes such as C up tothe working level D of the molten metal in the pot. It is immersed inthe melting pot and shaped to sit rigidly at one side of the pot, and isof such form that it does not interfere with the working parts of themachine.

Instead of charging new metal direct into the pot B and allowing it tomix haphazard with the metal and any dross that may be already containedtherein, the container or colander is charged with the new metalrequired either by hand or by an automatic arrangement. This containeror colander being perforated and immersed in the mol-,

ten metal in the pot acts as a strainer and Specification ofLettersPatent,

Patented Mar.2,1920.

Application filed June 24, 1919. Serial No. 306,499.

allows only the pure molten metal to flow through the perforations C butkeeps back the impure matter or dross thus assuring that the pump andthe working channels shall have a clean supply. By the straining actionof the colander the impure matter is retained in the colander, thuspreventing any blockage in the working parts of the machine. No skimmingoil of the dross is necessary, and therefore any robbing of the alloy ofthe very ingredients which are relied upon to give the metal thehardness necessary to produce suitable lines of type for printing isavoided. The colander is however from time to time say once a week takenout of the pot and emptied of the dross contained therein and thenreplaced. This is a very important point because skimming is alwaysliable to rob the metal of a certain quantity of the tin and antimonywhich are relied on to give the metal its hardness. Consequently thepresent invention avoids robbing the metal of its body elements andenables better lines of type to be produced. Furthermore by the presentinvention the pump plunger will run for three weeks or so,withoutcleaning instead of having to be ries the colander with it also, so thata very effective agitation of the molten metal in the pot is set up.

We declare that what we claim is 1. The combination with the meltingpots of type bar making machines, of a perforated container or colanderinto which the type metal required is charged, such container beingimmersed into the pot and acting as a strainer to allow the pure metalto flow freely through the perforations and mix with the metal in thepot, but keep back the dross.

2. The combination with the melting pots of type bar making machinescontaining a pump plunger, of a perforated container or colander intowhich the type metal is signed ournames this 6th day of June 1919,charged, such container being immersed in in the presence of twosubscribing witnesses. 10 the pot, and means for connecting the saidALLAN EDGAR JEANS. colander to the pump plunger so that the I H!-colander Will move with the plunger and. set E THO S up an agitation ofthe molten metal in the Witnesses: pot. F. G. WILLIAMS,

In witness whereof We have hereunto J. MCLACHLAN,

